~/tools / ssl-checker

SSL Checker

Check SSL certificate expiry, chain validity, TLS version and cipher. Catches expired certs, weak crypto and chain issues.

[ OK ] Valid for 315 more days.

── output ─────

Issued to: welt.de
Issued by: Amazon RSA 2048 M04
Valid from: 2026-02-01
Valid until: 2027-03-02 (315 days)
TLS version: TLSv1.2
Cipher: ECDHE-RSA-AES128-GCM-SHA256
Key: RSA · 2048 bit
Signature: sha256WithRSAEncryption
Forward secrecy: yes
Self-signed: no
Must-staple: no
SHA-256 fingerprint: C7:9C:86:07:96:EB:42:48:00:5A:16:91:56:39:CD:E4:1F:69:BE:24:18:A7:39:93:F5:D2:69:CB:44:85:86:60
Serial: 01913AC1738576173C342B3CE2CD453D

subject_alt_names · 1

welt.de

certificate_chain · 3 certs

[ leaf ]welt.de

315 days left

issuer: Amazon RSA 2048 M04

2026-02-01 → 2027-03-02

[ inter ]Amazon RSA 2048 M04

1585 days left

issuer: Amazon Root CA 1

2022-08-23 → 2030-08-23

[ inter ]Amazon Root CA 1

4271 days left

issuer: Starfield Services Root Certificate Authority - G2

2015-05-25 → 2037-12-31

// Save welt.de → we'll run this daily and alert on changes. /signup →